fulltext.study @t Gmail

Green metrics for sustainability of biobased lactic acid from starchy biomass vs chemical synthesis

Paper ID Volume ID Publish Year Pages File Format Full-Text
53994 46992 2015 6 PDF Available
Title
Green metrics for sustainability of biobased lactic acid from starchy biomass vs chemical synthesis
Abstract

•Biobased lactic acid vs chemical sythesis shows up 47% higher energy efficiency.•Biological conversion of waste to the lactic acid allows to lower total costs by 17%.•The efficiency of the biotechnological processes can be increased by using renewable biomass.•Optically pure biobased lactic acid is important issue for bioplastics production.

The interest in the biotechnological production of lactic acid has increased due to the prospects of environmental friendliness and of using renewable resources instead of petrochemicals. Besides, this type of lactic acid is important for polylactic acid (PLA) production, as it is not toxic as packaging in food application while monomers of many fossil polymers are. However, lack of information can be found about the efficiency of fermentative production of lactic acid from biomass in compare with its production in a chemical way.The present paper reviews some of our recent studies concerning metrics relevant to the development of a cost-effective and sustainable viable processes for lactic acid production. In particular, the following metrics were taken for consideration: (i) material efficiency; (ii) total energy efficiency, (iii) economic added value and (iv) land use.Higher economical effect has been found by using biological conversion of wheat biomass to lactic acid vs chemical synthesis by increasing the energy efficiency by 47% and decreasing the total costs by 17%. Chemical synthesis from petrochemical resources always results in a racemic mixture of d/l-lactic acid, which is a major disadvantage of this approach, while fermentation-derived lactic acid mixtures of poly d(−) and poly l(+) give the high crystalline melting point (Tm), which is a very important criteria for improving PLA applicability for bioplastics production. Conversely, microbial lactic acid fermentation offers an advantage in terms of utilization of renewable carbohydrate biomass, low production temperature, low energy consumption, and the production of optically high pure lactic acid by selecting an appropriate strain.

Graphical abstractFigure optionsDownload full-size imageDownload high-quality image (335 K)Download as PowerPoint slide

Keywords
Lactic acid; Metrics; Biotechnological production; Chemical synthesis; Wheat biomass
First Page Preview
Green metrics for sustainability of biobased lactic acid from starchy biomass vs chemical synthesis
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us
Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Today - Volume 239, 1 January 2015, Pages 11–16
Authors
, , , , , ,
Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us